2025年4月4日 · Drylands are highly vulnerable to erosion by wind and water and are affected by land use (e.g., grazing) and disturbance (e.g., fire). The Ecosystems Land Change Science Program conducts research to understand the primary drivers of change in dryland soils and vegetation to inform management decisions.

Drylands cover 41.3% of the Earth's land surface, including 15% of Latin America, 66% of Africa, 40% of Asia, and 24% of Europe. There is a significantly greater proportion of drylands in developing countries (72%), and the proportion increases with aridity: almost 100% of all hyper-arid lands are in the developing world.

2025年3月10日 · Drylands can be classified into four types - dry sub-humid, semi-arid, arid and hyper-arid lands - and encompass a variety of ecosystems. Drylands are areas which face great water scarcity. They cover over 40% of the earth's land surface, and are home to more than two billion people. They are highly adapted to climatic variability…

Land, also known as dry land, ground, or earth, is the solid terrestrial surface of Earth not submerged by the ocean or another body of water. It makes up 29.2% of Earth's surface and includes all continents and islands .

Drylands are characterized by a scarcity of water, which affects both natural and managed ecosystems and constrains the production of livestock as well as crops, wood, forage and other plants and affects the delivery of environmental services.

ASU’s Global Drylands Center engages key actors of dryland stewardship to develop use-inspired research, training and solutions for arid lands around the world. The vision of the Global Drylands Center is to become the world leader in discovery and education ensuring a …

In the U.S., 40 percent of the land is considered dryland. USGS scientists are researching how predicted climate changes in dryland ecosystems--increases in temperature and declines in precipitation--will affect vegetation and wildlife in these areas as …

It summarizes the distribution of forests, other wooded land and other land uses including grasslands, croplands, built-up areas and barren land. It also estimates tree canopy cover, shrub cover, forest type and presence of trees outside of forests.

In North America the dry land areas lie almost exclusively west of the 100° meridian. There are two distinct rainfall regimes, with winter rains prevailing in the west and summer rains in the east. Three dry land regions can be distinguished: the Pacific Valleys, the Inter-mountain Region, and the Great Plains.

2019年2月25日 · This project provides critical observational, experimental, and modelling evidence to support our DOI partners with decision processes aimed and avoiding, minimizing, and mitigating undesired changes due to drought and land change.